2012-01-27 Pedro Alves <palves@redhat.com>

* config/extended-gdbserver.exp: New file.
	* lib/gdbserver-support.exp (gdbserver_start_extended): Extend
	comment.
	(gdbserver_start_multi, mi_gdbserver_start_multi): New.
	* boards/native-extended-gdbserver.exp: New file.

gdb/testsuite/ChangeLog

@@ -1,3 +1,11 @@
+2012-01-27  Pedro Alves  <palves@redhat.com>
+
+	* config/extended-gdbserver.exp: New file.
+	* lib/gdbserver-support.exp (gdbserver_start_extended): Extend
+	comment.
+	(gdbserver_start_multi, mi_gdbserver_start_multi): New.
+	* boards/native-extended-gdbserver.exp: New file.
+
 2012-01-26  Pedro Alves  <palves@redhat.com>
 
 	* gdb.base/watchpoint.exp: Replace send_gdb/gdb_expect by gdb_test

gdb/testsuite/boards/native-extended-gdbserver.exp

@@ -0,0 +1,150 @@
+# Copyright 2011-2012 Free Software Foundation, Inc.
+
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+# This file is a dejagnu "board file" and is used to run the testsuite
+# natively with gdbserver, in extended-remote mode.
+#
+# To use this file:
+# bash$ touch ${my_dejagnu_dir}/my-dejagnu.exp
+# bash$ export DEJAGNU=${my_dejagnu_dir}/my-dejagnu.exp
+# bash$ mkdir ${my_dejagnu_dir}/boards
+# bash$ cp ${src_dir}/gdb/testsuite/boards/native-extended-gdbserver.exp \
+#   ${my_dejagnu_dir}/boards
+# bash$ cd ${build_dir}/gdb
+# bash$ make check RUNTESTFLAGS="--target_board=native-extended-gdbserver"
+
+load_generic_config "extended-gdbserver"
+
+# By default, dejagnu makes the board remote unless the board name
+# matches localhost.  Force it to be NOT remote.
+global board
+global board_info
+set board_info($board,isremote) 0
+
+process_multilib_options ""
+
+# The default compiler for this target.
+set_board_info compiler "[find_gcc]"
+
+# Can't do input (or output) in the current gdbserver.
+set_board_info gdb,noinferiorio 1
+
+# gdbserver does not intercept target file operations and perform them
+# on the host.
+set_board_info gdb,nofileio 1
+
+set_board_info sockethost "localhost:"
+
+# We will be using the extended GDB remote protocol.
+set_board_info gdb_protocol "extended-remote"
+
+# Test the copy of gdbserver in the build directory.
+set_board_info gdb_server_prog "../gdbserver/gdbserver"
+
+send_user "configuring for gdbserver local testing (extended-remote)\n";
+
+# We must load this explicitly here, and rename the procedures we want
+# to override.  If we didn't do this, given that mi-support.exp is
+# loaded later in the test files, the procedures loaded then would
+# override our definitions.
+load_lib mi-support.exp
+
+# Overriden in order to start a "gdbserver --multi" instance whenever
+# GDB is started.  Note nothing is needed for gdb_exit, since
+# gdbserver is started with --once, causing it to exit once GDB
+# disconnects.
+proc gdb_start { } {
+    # Spawn GDB.
+    default_gdb_start
+
+    # And then GDBserver, ready for extended-remote mode.
+    gdbserver_start_multi
+
+    return 0
+}
+
+# Likewise, for MI.
+#
+if { [info procs extended_gdbserver_mi_gdb_start] == "" } {
+    rename mi_gdb_start extended_gdbserver_mi_gdb_start
+}
+proc mi_gdb_start { args } {
+    # Spawn GDB.
+    set res [extended_gdbserver_mi_gdb_start $args]
+    if { $res } {
+	return $res
+    }
+
+    # And then GDBserver, ready for extended-remote mode.
+    mi_gdbserver_start_multi
+    return 0
+}
+
+# Overriden in order to set the remote exec-file whenever a file is
+# loaded to gdb.
+#
+proc gdb_load { arg } {
+    global gdb_prompt
+
+    if { $arg != "" } {
+	if [gdb_file_cmd $arg] then { return -1 }
+    }
+
+    send_gdb "set remote exec-file $arg\n"
+    gdb_expect {
+	-re "$gdb_prompt $" {}
+	timeout {
+	    perror "couldn't set the remote exec-file (timed out)."
+	    return -1
+	}
+    }
+
+    return 0
+}
+
+# Likewise, for MI.
+#
+if { [info procs extended_gdbserver_mi_gdb_load] == "" } {
+    rename mi_gdb_load extended_gdbserver_mi_gdb_load
+}
+proc mi_gdb_load { arg } {
+    global mi_gdb_prompt
+
+    set res [extended_gdbserver_mi_gdb_load $arg]
+    if { $res } then { return -1 }
+
+    send_gdb "100-gdb-set remote exec-file $arg\n"
+    gdb_expect 10 {
+	-re ".*100-gdb-set remote exec-file $arg\r\n100\\\^done\r\n$mi_gdb_prompt$" {
+	    verbose "set the remote exec-file to $arg."
+	}
+	timeout {
+	    perror "couldn't set the remote exec-file (timed out)."
+	}
+    }
+
+    return 0
+}
+
+proc ${board}_download { board host dest } {
+    return $host
+}
+
+proc ${board}_file { dest op args } {
+    if { $op == "delete" } {
+	return 0
+    }
+    return [eval [list standard_file $dest $op] $args]
+}

gdb/testsuite/config/extended-gdbserver.exp

@@ -0,0 +1,27 @@
+# Copyright 2000, 2002, 2003, 2004, 2005, 2007, 2008, 2009, 2010, 2011
+# Free Software Foundation, Inc.
+
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+#
+# This module is used for testing GDB using GDBserver in
+# extended-remote mode.
+#
+
+# The guts live in gdbserver-support.exp.
+load_lib gdbserver-support.exp
+
+proc gdb_reconnect { } {
+    return [gdbserver_reconnect]
+}

gdb/testsuite/lib/gdbserver-support.exp

@@ -355,7 +355,9 @@ proc gdbserver_reconnect { } {
     return [gdb_target_cmd $gdbserver_protocol $gdbserver_gdbport]
 }
 
-# Start and connect to a gdbserver in extended mode.
+# Start and connect to a gdbserver in extended mode.  Note this frobs
+# $gdbserver_protocol, so should be used only from a board that
+# usually connects in target remote mode.
 proc gdbserver_start_extended { } {
     global gdbserver_protocol
     global gdbserver_gdbport
@@ -372,3 +374,32 @@ proc gdbserver_start_extended { } {
 
     return [gdb_target_cmd $gdbserver_protocol $gdbserver_gdbport]
 }
+
+# Start and connect to a gdbserver in extended/multi mode.  Unlike
+# gdbserver_start_extended, this does not frob $gdbserver_protocol.
+
+proc gdbserver_start_multi { } {
+    global gdbserver_protocol
+    global gdbserver_gdbport
+
+    set res [gdbserver_start "--multi" ""]
+    set gdbserver_protocol [lindex $res 0]
+    set gdbserver_gdbport [lindex $res 1]
+
+    return [gdb_target_cmd $gdbserver_protocol $gdbserver_gdbport]
+}
+
+# Start a gdbserver process in multi/extended mode, and have GDB
+# connect to it (MI version).  Return 0 on success, or non-zero on
+# failure.
+
+proc mi_gdbserver_start_multi { } {
+    global gdbserver_protocol
+    global gdbserver_gdbport
+
+    set res [gdbserver_start "--multi" ""]
+    set gdbserver_protocol [lindex $res 0]
+    set gdbserver_gdbport [lindex $res 1]
+
+    return [mi_gdb_target_cmd $gdbserver_protocol $gdbserver_gdbport]
+}